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I was going to create a new hardware profile for music making and i looked on my system properties and this is what it said under IRQ's:
IRQ 0 System timer OK
IRQ 1 Standard 101/102-Key or Microsoft Natural PS/2 Keyboard OK
IRQ 3 Intel(R) 82801DB/DBM SMBus Controller - 24C3 OK
IRQ 4 Communications Port (COM1) OK
IRQ 6 Standard floppy disk controller OK
IRQ 8 System CMOS/real time clock OK
IRQ 9 Microsoft ACPI-Compliant System OK
IRQ 12 PS/2 Compatible Mouse OK
IRQ 13 Numeric data processor OK
IRQ 14 Primary IDE Channel OK
IRQ 15 Secondary IDE Channel OK
IRQ 16 Intel(R) 82801DB/DBM USB Universal Host Controller - 24C2 OK
IRQ 16 Creative SB Audigy 2 ZS (WDM) OK
IRQ 17 OHCI Compliant IEEE 1394 Host Controller OK
IRQ 17 AVerDVD EZMaker WDM Video Capture OK
IRQ 17 Broadcom 440x 10/100 Integrated Controller OK
IRQ 18 Intel(R) 82801DB/DBM USB Universal Host Controller - 24C7 OK
IRQ 18 NVIDIA GeForce FX 5200 OK
IRQ 19 Intel(R) 82801DB/DBM USB Universal Host Controller - 24C4 OK
IRQ 23 Intel(R) 82801DB/DBM USB 2.0 Enhanced Host Controller - 24CD OK
My question is are there any conflicts here that are maybe having an adverse affect on my USB ports as some don't work when i plug things into them (device not recognised).Am looking at IRQ 17 and 18 here.
There aren't any reported conflicts. On the shared/comflicts tab of system info it just says:
I/O Port 0x00000000-0x00000CF7 PCI bus
I/O Port 0x00000000-0x00000CF7 Direct memory access controller
IRQ 16 Intel(R) 82801DB/DBM USB Universal Host Controller - 24C2
IRQ 16 Creative SB Audigy 2 ZS (WDM)
IRQ 17 OHCI Compliant IEEE 1394 Host Controller
IRQ 17 AVerDVD EZMaker WDM Video Capture
IRQ 17 Broadcom 440x 10/100 Integrated Controller
IRQ 18 Intel(R) 82801DB/DBM USB Universal Host Controller - 24C7
IRQ 18 NVIDIA GeForce FX 5200
Memory Address 0xA0000-0xBFFFF PCI bus
Memory Address 0xA0000-0xBFFFF NVIDIA GeForce FX 5200
But again i don't know if this is a conflict. The reason i ask is that for no reason my usb ports play up. I have an external HDD (self powered), a 4 port USB hub (Self powered)and i can't have both plugged in at the same time. Now i know that this maybe a power issue but it just seemed to happen overnight. Was working fine, then wasn't. If i plug HDD in the USB hubs devices all become "Device not recognised" and vice versa.
I`m no techie but there have been a fair few questions and articles in PCA on the subject of USB promlems. I seem to remember something similar to that which you are experiencing but I can`t be positive - or remember which issue.
The suggestion made was to use different USB connectors for the devices, i.e swop them around, and see if that made a difference.
This response is all very well if you have six ports, or similar, but if you only have a couple....
I presume you have tried the order in which you plug in the units? Failing that you may well have to change IRQs for up to four of them. Whether this is likely to cure the problem I have no idea.
You could try click here or click here for more info.
In dvice manager uninstall all the root hubs and everything nder the heading USB.
rebot the machine and let XP find new hardware and reinstall.
This should refresh all the ports.
Thanks guys. I reinstalled all the USB ports and still happens. I think that the order of the devices does soemthing but still doesn't recognise the HDD and Hub together (some work in some ports but not in others). Bit of a pain really but it seems i may have to have one pluggged in and one not until something comes along that sorts it out.
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